src/statusbarspaceinfo.cpp

   1 /***************************************************************************
   2  *   Copyright (C) 2006 by Peter Penz (peter.penz@gmx.at) and              *
   3  *   and Patrice Tremblay                                                  *
   4  *                                                                         *
   5  *   This program is free software; you can redistribute it and/or modify  *
   6  *   it under the terms of the GNU General Public License as published by  *
   7  *   the Free Software Foundation; either version 2 of the License, or     *
   8  *   (at your option) any later version.                                   *
   9  *                                                                         *
  10  *   This program is distributed in the hope that it will be useful,       *
  11  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  12  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  13  *   GNU General Public License for more details.                          *
  14  *                                                                         *
  15  *   You should have received a copy of the GNU General Public License     *
  16  *   along with this program; if not, write to the                         *
  17  *   Free Software Foundation, Inc.,                                       *
  18  *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
  19  ***************************************************************************/
  20
  21 #include "statusbarspaceinfo.h"
  22
  23 #include <kdiskfreespace.h>
  24 #include <kmountpoint.h>
  25 #include <klocale.h>
  26 #include <kio/job.h>
  27
  28 #include <QTimer>
  29 #include <QKeyEvent>
  30
  31 StatusBarSpaceInfo::StatusBarSpaceInfo(QWidget* parent) :
  32     KCapacityBar(KCapacityBar::DrawTextInline, parent),
  33     m_gettingSize(false),
  34     m_foundMountPoint(false)
  35 {
  36     setMaximumWidth(200);
  37     setMinimumWidth(200); // something to fix on kcapacitybar (ereslibre)
  38
  39     // Update the space information each 10 seconds. Polling is useful
  40     // here, as files can be deleted/added outside the scope of Dolphin.
  41     QTimer* timer = new QTimer(this);
  42     connect(timer, SIGNAL(timeout()), this, SLOT(refresh()));
  43     timer->start(10000);
  44 }
  45
  46 StatusBarSpaceInfo::~StatusBarSpaceInfo()
  47 {
  48 }
  49
  50 void StatusBarSpaceInfo::setUrl(const KUrl& url)
  51 {
  52     m_url = url;
  53     refresh();
  54 }
  55
  56 void StatusBarSpaceInfo::slotFoundMountPoint(const QString& mountPoint,
  57                                              quint64 kBSize,
  58                                              quint64 kBUsed,
  59                                              quint64 kBAvailable)
  60 {
  61     Q_UNUSED(mountPoint);
  62
  63     m_gettingSize = false;
  64     m_foundMountPoint = true;
  65     const bool valuesChanged = (kBUsed != static_cast<quint64>(value()));
  66     if (valuesChanged) {
  67         setText(i18nc("@info:status Free disk space", "%1 free", KIO::convertSize(kBAvailable * 1024)));
  68         setUpdatesEnabled(false);
  69         setValue((kBUsed * 100) / kBSize);
  70         setUpdatesEnabled(true);
  71         update();
  72     }
  73 }
  74
  75 void StatusBarSpaceInfo::slotDiskFreeSpaceDone()
  76 {
  77     if (m_foundMountPoint) {
  78         return;
  79     }
  80
  81     m_gettingSize = false;
  82     setText(i18nc("@info:status", "Unknown size"));
  83     setValue(0);
  84     update();
  85 }
  86
  87 void StatusBarSpaceInfo::refresh()
  88 {
  89     // KDiskFreeSpace is for local paths only
  90     if (!m_url.isLocalFile()) {
  91         setText(i18nc("@info:status", "Unknown size"));
  92         setValue(0);
  93         update();
  94         return;
  95     }
  96
  97     KMountPoint::Ptr mp = KMountPoint::currentMountPoints().findByPath(m_url.path());
  98     if (!mp) {
  99         return;
 100     }
 101
 102     m_gettingSize = true;
 103     m_foundMountPoint = false;
 104     KDiskFreeSpace* job = new KDiskFreeSpace(this);
 105     connect(job, SIGNAL(foundMountPoint(const QString&,
 106                                         quint64,
 107                                         quint64,
 108                                         quint64)),
 109             this, SLOT(slotFoundMountPoint(const QString&,
 110                                            quint64,
 111                                            quint64,
 112                                            quint64)));
 113     connect(job, SIGNAL(done()), this, SLOT(slotDiskFreeSpaceDone()));
 114
 115     job->readDF(mp->mountPoint());
 116
 117     // refresh() is invoked for each directory change. Usually getting
 118     // the size information can be done very fast, so to prevent any
 119     // flickering the "Getting size..." indication is only shown if
 120     // at least 300 ms have been passed.
 121     QTimer::singleShot(300, this, SLOT(showGettingSizeInfo()));
 122 }
 123
 124 void StatusBarSpaceInfo::showGettingSizeInfo()
 125 {
 126     if (m_gettingSize) {
 127         setText(i18nc("@info:status", "Getting size..."));
 128         update();
 129     }
 130 }
 131
 132 #include "statusbarspaceinfo.moc"